68689766798686 has 64 divisors (see below), whose sum is σ = 112998393446400. Its totient is φ = 31057326568800.

The previous prime is 68689766798567. The next prime is 68689766798687.

68689766798686 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 68689766798591 and 68689766798600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68689766798687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7377265971 + ... + 7377275281.

It is an arithmetic number, because the mean of its divisors is an integer number (1765599897600).

Almost surely, 2^{68689766798686} is an apocalyptic number.

68689766798686 is a deficient number, since it is larger than the sum of its proper divisors (44308626647714).

68689766798686 is a wasteful number, since it uses less digits than its factorization.

68689766798686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11965.

The product of its digits is 758487711744, while the sum is 100.

The spelling of 68689766798686 in words is "sixty-eight trillion, six hundred eighty-nine billion, seven hundred sixty-six million, seven hundred ninety-eight thousand, six hundred eighty-six".